What should I wear for a mobile blood draw?

Clothing choice is a small but practical consideration for a smooth blood draw:

Best options:

Avoid:

Why it matters:

The phlebotomist needs unobstructed access to your antecubital fossa (inner elbow crease) or, less commonly, the back of your hand. Tight clothing that constricts the upper arm can impair venous filling. Rolled-up sleeves that won't stay up can also be frustrating during the procedure.

If you have a preferred draw site other than the inner elbow, communicate that to your phlebotomist in advance.